//////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 12904 SUBJECT: IPN Triangulation of GRB 120129A (long/intense) DATE: 12/01/30 18:38:05 GMT FROM: Valentin Pal'shin at Ioffe Inst S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, K. Hurley, and J. Goldsten, on behalf of the MESSENGER NS GRB team, V. Connaughton, M. Briggs, and C. Meegan, on behalf of the Fermi GBM team, S. Barthelmy, J. Cummings, N. Gehrels, H. Krimm, and D. Palmer, on behalf of the Swift-BAT team, G. Di Cocco, F. Fuschino, M. Galli, C. Labanti, and M. Marisaldi, on behalf of the AGILE MCAL team, and E. Costa, E. Del Monte, I. Donnarumma, Y. Evangelista, M. Feroci, I. Lapshov, F. Lazzarotto, L. Pacciani, M. Rapisarda, P. Soffitta, for the SuperAGILE team, report: The long-duration, very intense GRB 120129A was observed by Konus-Wind, MESSENGER (GRNS), AGILE (MCAL and SuperAGILE), Fermi (GBM), and Swift (BAT) at about 50146 s UT (13:55:46). The burst was outside the coded fields of view of the BAT and SuperAGILE. We have triangulated it to a preliminary, 3 sigma error box whose coordinates are: --------------------------------------------- RA(2000), deg Dec(2000), deg --------------------------------------------- Center: 30.440 (02h 01m 46s) +59.282 (+59d 16' 55") Corners: 23.362 (01h 33m 27s) +68.842 (+68d 50' 33") 31.740 (02h 06m 58s) +56.353 (+56d 21' 09") 34.401 (02h 17m 36s) +51.346 (+51d 20' 44") 28.869 (01h 55m 29s) +62.399 (+62d 23' 58") --------------------------------------------- The error box area is 2.7 sq. deg, and its maximum dimension is 18.3 deg. This box can be improved. The time history and spectrum will be given in a forthcoming GCN Circular. A triangulation map is posted at http://www.ioffe.ru/LEA/GRBs/GRB120129_T50148/IPN/ //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 12905 SUBJECT: Konus-Wind observation of GRB 120129A DATE: 12/01/31 10:18:12 GMT FROM: Dmitry Frederiks at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report: The long intense GRB 120129A (localized by IPN: Golenetskii et al., GCN 12904) triggered Konus-Wind at T0=50148.403s UT (13:55:48.403). The observation is performed against very high and variable background count rate caused by solar charged particles. The burst light curve shows two bright partly overlapped pulses. A total duration of the burst is ~4 s. The emission is seen up to ~5 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB120129_T50148/ As observed by Konus-Wind the burst had a fluence of (2.7 ± 0.7)x10-5 erg/cm2, and a 16-ms peak flux, measured from T0+0.672 s, of (3.3 ± 1.0)x10-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (measured from T0 to T0+3.328 s) is best fitted in the 20 keV - 5 MeV range with the GRB (Band) model, for which: the low-energy photon index alpha = -0.76 (-0.09, +0.09), the high energy photon index beta = -2.9 ( <-2.3), the peak energy Ep = 326(-38, +52) keV, chi2 = 66.5/76 dof. The spectrum at the maximum count rate (measured from T0+0.512 to T0+0.768 s) is best fitted is best fitted in the 20 keV - 5 MeV range with the GRB (Band) model, for which: the low-energy photon index alpha = -0.51 (-0.19, +0.21), the high energy photon index beta = -2.3 (-1.4, +0.3), the peak energy Ep = 317(-66, +92) keV, chi2 = 54.2/61 dof. All the quoted results are preliminary. All the quoted errors are at the 90% confidence level. //////////////////////////////////////////////////////////////////////// TITLE: GCN CIRCULAR NUMBER: 12907 SUBJECT: GRB 120129A: MASTER optical observations DATE: 12/01/31 14:59:21 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, V.V.Chazov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, A.Sankovich, S. Shurpakov Moscow State University, Sternberg Astronomical Institute O.Gres, O.Chuvalaev,K.Ivanov, V.A.Poleshchuk, S.Yazev, N.M.Budnev Irkutsk State University V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka E. Sinykov, V.Yurkov, Yu.Sergienko, D.Varda, Blagoveschensk Educational State University, Blagoveschensk A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory MASTER II robotic double telescope (FOW=2x4 square degrees, http://observ.pereplet.ru) located in Tunka was observed the GRB120129A (S. Golenetskii et al., GCN Circ 12904) IPN triangulation error-box using 9 diffent fields. Observations proceeded since 2012-01-30 20:50 to 2012-01-30 22:50 i.e aprox. 1.3 days after grbtime. On our images we haven`t found an optical transient within IPN error-box (S. Golenetskii et al., GCN Circ 12904). Unfiltred upper limit is 18.5 on each image. There is a one strange OT MASTER022229.64+523924.9 which seen only at one image. Date time Ra Dec Mag 2012-01-30 22:50:52.423 02h 22m 29.64s , +52d 39m 24s.9 15.37 The object is not seen on images given after (10 hours) and before (1 hour) detection time. A preview of this object available here http://master.sai.msu.ru/static/OTMASTER022229_523924.png Our very wide fiels cameras (FOW=2x420 square degrees) synchronously with GRB have covered area directly under the errors-box. A coverage map available here http://master.sai.msu.ru/static/GRB120129A_MASTER_Cover.png The message may be cited.